tree/event.go

package tree

/*
	These code should be common to all gui plugins

	There are some helper functions that are probably going to be
	the same everywhere. Mostly due to handling the binary tree structure
	and the channel communication

	For now, it's just a symlink to the 'master' version in
	./toolkit/nocui/common.go
*/

import (
	"go.wit.com/log"
	"go.wit.com/widget"
)

func (me *TreeInfo) SendEnableDebugger() {
	if me.callback == nil {
		log.Warn("SendUserEvent() toolkit panic() callback == nil")
		return
	}
	var a widget.Action
	a.ActionType = widget.EnableDebug
	a.ProgName = me.PluginName
	me.callback <- a
	return
}

func (me *TreeInfo) SendToolkitLoad(s string) {
	if me.callback == nil {
		log.Warn("SendUserEvent() toolkit load callback == nil")
		return
	}
	var a widget.Action
	a.ActionType = widget.ToolkitLoad
	a.ProgName = me.PluginName
	a.Value = s
	log.Warn("SendUserEvent() START: toolkit load", s)
	me.callback <- a
	log.Warn("SendUserEvent() END:   toolkit load", s)
	return
}

func (me *TreeInfo) SendToolkitPanic() {
	if me.callback == nil {
		log.Warn("SendUserEvent() toolkit panic() callback == nil")
		return
	}
	var a widget.Action
	a.ActionType = widget.ToolkitPanic
	a.ProgName = me.PluginName
	log.Info("SendUserEvent() START: toolkit panic()")
	me.callback <- a
	log.Info("SendUserEvent() END:   toolkit panic()")
	return
}

func (me *TreeInfo) SendWindowCloseEvent(n *Node) {
	if me.callback == nil {
		log.Warn("SendUserEvent() callback == nil", n.WidgetId)
		return
	}
	var a widget.Action
	a.WidgetId = n.WidgetId
	a.ActionType = widget.CloseWindow
	log.Info("SendUserEvent() START: user closed the window", n.GetProgName())
	me.callback <- a
	log.Info("SendUserEvent() END:   user closed the window", n.GetProgName())
	return
}

// Other goroutines must use this to access the GUI
func (me *TreeInfo) SendUserEvent(n *Node) {
	if me.callback == nil {
		log.Warn("SendUserEvent() callback == nil", n.WidgetId)
		return
	}
	var a widget.Action
	a.WidgetId = n.WidgetId
	a.Value = n.State.Value
	a.ActionType = widget.User
	if n.WidgetType == widget.Checkbox {
		log.Info("SendUserEvent() checkbox going to send:", a.Value)
	}
	log.Info("SendUserEvent() START: send a user event to the callback channel")
	me.callback <- a
	log.Info("SendUserEvent() END:   sent a user event to the callback channel")
	return
}